Waterproofing vegetable protein-base glue



106. COMPOSITIONS,

Patented M... 26, 1929. 1,706,674

UNITED .STATES PATENT OFFICE.

I GEORGE E. OSGOOD, OF TACOMA,WASHINGTON.

wa'rnarnoorme VEGETABLE PROTEIN-BASE GLUE. no nmwm Application filed August 11, 1926. Serial 1%. 128,627. 6 7

The object of my invention is to increase I eanut meal,cottonseed meal, or linseed meal, the water-resistance of protein-base vegetable one hundred parts; h drated lime, sixteen glues, adapted to be used in the manufacture parts; sodium carbonaie, ten parE; sodium of wooden articles, whereby a glue which 1s slhcate, twenty parts; "um damar, or ot 1er .5 of great strength andhighwater resistance, equlvalent gum, as above-stated, one-and-aand whichischea tomake, may be obtained. half parts; as halt, one part; sul hur one- A further object ism change the color of such fourth part; and carbon bisul lil de, about a glue to a shade similar to that of the wood two-and-three-quarter parts. 1e 0 a1 quanon' which it is used, thereby eliminating the tlty of water used to give the glue a usual de- 10 objectionable feature of the dark line, d1sgree of flu dlty would be about three-hunplayed by the layer of glue at the mint, comdred-and-eightyparts. mon in such vegetable protein-base glues. The preparation thus produced needs no My invention consists in incorporating a warmmg or cooklng to make it ready for use aterroof adhesive, not soluble in water and it can be ap lied to the wood at any time 15 into a ve etable protein-base glue. As a samwithin twentyour hours after the mixture le of such a g ue com oun t e mixture may has been prepared.

e composed of a hig protein-content vege- The vegetable meal used in such a glue is table meal, such as eanutmea cottonseed the ordinary commercial product. The hymeal, or linseed meal, with hydrated lime, drated lime and the sodium carbonate are 20 Edium carbonate, sodium silicate, an adheboth effective in bringing the meal into solu- 'slve commonly known as ru er ceinentharlid tl0clll. Ellie sod i lilm silicatie is both It} slolvendt 'comprisin um damar, commercia as a t, an a er. e gum amar, asp a t an sul hur, a nd solu5le in carbon bisulphide. sulphur should be in a finely powdered form. 7 II-I place of the gum damar any of the resinous The vegetable meal, lime, sodium carbonate, 25 gums which are stlilluble in carbon bisulpiiide, and sodiun iihcate fgrm a mixtilmla solugle in such as tta erc a m mastic, m e emi, water, an t e um amar, asp a t, an su or Norwa ltch may e use ,1 desired. phur form a mi xture which is soluble in the Such a giue may be prepared for use by carbon bisulphide. The gum damar, asphalt, either one of two methods, namely, all the insulphur, and carbon bisulphide form a so gredients (the sodium silicate bein in apowgummy mass which renders the entire glue dered form), except the carbon bisulphide, practically impervious'to water, when it is may be mixed together and shipped or held dry. The adhesive quality of such a glue is in bulk until needed for use, when the said derived from the protein of the meal, and the dr mixture is stirred, together with the ligwaterproofing thereof is derived from the 35 md carbon bisul hide, into the required quangummy mass.

tity of water for a sufiicient time to permit After the gums are dissolved by the carbon the mafirials to be dissolved and thoroughly bisulphide they are absorbed by the protein mixed into a homogeneous mass; or, the sevin the meal, and change the color of the glue .90 eral ingredients may be separately dissolved, from brown to a dark yellow, thus making 0 -in the water or in the carbon bisulphide as the the adhesive quality of the meal (protein) case may be, and the resulting liquids then an insoluble rubber-like material, when set, thoroughly stirred together into a homogehaving a color substantially similar to the neous and smooth fluid. In either case the wood to which it is applied. amount of water used in making the glue I claim 5 mixture maybe varied somewhat to change 1. A homogeneous water-resistant, strong the fluidity, but it will be found that if the glue,compris1ng ahigh protein-content vegewater weighs about two-and-a-half times the table meal, hydrated lime, sodium carbonate, weight of the othermaterials a glue of good and sodium silicate, all dissolved in water; 100 viscosity will be obtained. together with small amounts of gum damar, 50 The proportions of the ingredients in the asphalt, and sulphur, dissolved in carbon biabove example of such a he may be:A sulphide, and mixed with the materials dishigh protein-content vegeta 1e meal, such as solved in water.

2. A homogeneous ater-resistant, strong with one-and-a-half parts of gum damar, one glue, comprising a mixture of one-hundred part of asphalt, and one-fourth of a part of parts of a high proteimoontent Vegetable sulphur, dissolved in about two-and-three- 10 meal, about sixteen parts of hydrated lime, quarters parts of carbon bisulphide, and 5 ten parts of sodium carbonate, twenty parts mixed with the materials dissolved in the of sodium silicate, dissolved in about threewater. hundred-and-eighty parts of water; together GEORGE H. OSGOOD. 

